////////////////////////////////////////////////////////////////////////////// // // spa.ja // (c) Gareth Bult 2017 // MIT License // // Depends on: jQuery // // Turn any website into a Single Page Application by including this code. // ////////////////////////////////////////////////////////////////////////////// // // we need a global reference so we can add 3rd parth callbacks // var iflex_spa_callbacks = iflex_spa_callbacks || {}; // // on-ready handler, jQuery 3 style // jQuery(function() { ////////////////////////////////////////////////////////////////////////// // // Configuration - this section will change and adapt as we build up a // list of edge-cases. // ////////////////////////////////////////////////////////////////////////// var href = window.location.href, has_protocol = new RegExp('^(http|https):','i'), is_local = new RegExp('^(http:|https:|)//' + window.location.host,'i'), is_download = new RegExp('\.(iso|torrent|sig|zip)$'), wp_admin = new RegExp('(/wp-admin/|/wp-login.php)'), ////////////////////////////////////////////////////////////////////////// // // jQuery_monkeypatch - add error trapping to the globalEval call // ////////////////////////////////////////////////////////////////////////// jQuery_monkeypatch = function() { jQuery.globalEval = function(b) { var a = window; b && jQuery.trim(b) && (a.execScript || function(b) { try { a.eval.call(a, b) } catch(error) { console.log(error, b); } })(b) } }, ////////////////////////////////////////////////////////////////////////// // // scroll_top - reposition the page on a given #tag // ////////////////////////////////////////////////////////////////////////// scroll_top = function(tag) { if(jQuery('#'+tag)) { node = jQuery('#'+tag).offset(); jQuery('html, body').animate({scrollTop: node.top + 'px'}, 'fast'); } }, ////////////////////////////////////////////////////////////////////////// // // set_position - reposition the page based on the current #tag and link // ////////////////////////////////////////////////////////////////////////// set_position = function(tag,htag) { if(htag&&(jQuery('#'+htag).length)) return scroll_top(htag); if(tag=='href') jQuery('html,body').scrollTop(0); }, ////////////////////////////////////////////////////////////////////////// // // move_scripts - move a bunch of scripts to a new target location // ////////////////////////////////////////////////////////////////////////// move_scripts = function(scripts, target) { jQuery.each(scripts, function() { var script = document.createElement('script'), node = target.lastChild; if(this.src) { script.type = this.type; script.src = this.src; } else { script.innerHTML = this.innerHTML; } node.parentNode.insertBefore(script, node.nextSibling); }); }, ////////////////////////////////////////////////////////////////////////// // // reload_head - add new entries to page head and remove obsoletes // ////////////////////////////////////////////////////////////////////////// reload_head = function(head) { var live = jQuery('head').find('*'); jQuery.each(jQuery(head).find('*'), function() { var raw = jQuery(this).get()[0], i=live.length; while(--i >= 0) { if(raw.isEqualNode(jQuery(live[i]).get()[0])) { live.splice(i,1); break; } } if(i<0) jQuery('head').append(this); }); jQuery.each(jQuery('head').find('*'), function() { var raw = jQuery(this).get()[0], old = this; jQuery.each(live, function(k,v) { if(raw.isEqualNode(jQuery(v).get()[0])) jQuery(old).remove(); }); }); }, ////////////////////////////////////////////////////////////////////////// // // load_page - bulk of the work, replace the current page with a new one // ////////////////////////////////////////////////////////////////////////// load_page = function(tag, href, data, navigate) { var target, base, url, htag, replace_page = function(data,status,xhr) { var mtype,stype,content_type = xhr.getResponseHeader('Content-Type').split(";")[0]; [mtype,stype] = content_type.split("/"); switch(mtype) { case 'text': var url, htag, head, body, hscripts, bscripts, node = document.createElement("html"); window.onload = null; // make sure this is clear for things like SMF node.innerHTML = data; head = node.getElementsByTagName("head")[0]; document.title = jQuery(head).find('title').text(); body = node.getElementsByTagName("body")[0]; hscripts = jQuery(head).find('script').remove().get(); bscripts = jQuery(body).find('script').remove().get(); reload_head(head); move_scripts(hscripts, body); move_scripts(bscripts, body); jQuery_monkeypatch(); jQuery("body").html(body.innerHTML); [url,htag] = href.split('#'); set_position(tag,htag); setTimeout(function(){jQuery(window).trigger('load');},100); break; case 'application': case 'image': var win = window.open(href, '_blank'); win.focus(); return false; default: alert('Not configured handle file type: ', content_type); return false; } if(navigate) history.pushState({href: href}, null, href); jQuery.each(iflex_spa_callbacks, function(name,routine){ routine(); }); }; switch(tag) { case 'action': target = href; href = window.location.href; jQuery.ajax({ url: target, data: data, type: 'POST', success: replace_page, processData: false, contentType: false, cache: false }); break; case 'href': base = window.location.href.split('#')[0]; [url,htag] = href.split('#'); if(htag&&(!url||url==base)) return scroll_top(htag); if(!htag||(url&&(url!=base))) jQuery.get(href, replace_page).fail(function(){ alert('Unable to locate url '+href); }); } }, ////////////////////////////////////////////////////////////////////////// // // outside - work out if a given URL is going to cause us to leave site // ////////////////////////////////////////////////////////////////////////// outside = function(href) { if(has_protocol.test(href) && !is_local.test(href)) return true; if(is_download.test(href)||wp_admin.test(href)) return true; return false; }, ////////////////////////////////////////////////////////////////////////// // // wrap - assign a new handler to an element (if appropriate) // ////////////////////////////////////////////////////////////////////////// wrap = function(self, tag, handler) { // // if we have no url, or the url is outside the site ... // var href = jQuery(self).attr(tag); if(!href||(href=='#')||outside(href)) return false; // // add a handler to override the default process // jQuery(self).on(handler, function(event){ var not_supported = false, data = null, button = null; // // make sure we've not been beaten to the punch // if(event.isDefaultPrevented()) return false; switch(tag) { case 'action': // // for POST requests we're going to use the results from // FormData, and add the name/value of the submit button // data = new FormData(this); button = document.activeElement; if(button.name) data.append(button.name, button.value) break; case 'href': break; default: not_supported = true; break; } if(not_supported) return; event.preventDefault(); load_page(tag,href,data,true); }); }, ////////////////////////////////////////////////////////////////////////// // // back_butto - retask the back button to do a soft back if within site // ////////////////////////////////////////////////////////////////////////// back_button = function() { // // If we're run out of history, exit the site // if(!history.state) return window.history.back(); // // Otherwise, implement our own version of bac // load_page('href', history.state.href, null, false); }; ////////////////////////////////////////////////////////////////////////// // // ~~~ MAIN ~~~ // ////////////////////////////////////////////////////////////////////////// // // wrap all A links for FORMs // jQuery('a').each(function(){wrap(this,'href','click')}); jQuery('form').each(function(){wrap(this,'action','submit')}); // // wrap the browser's 'BACK' button // jQuery(window).off('popstate').on('popstate', back_button); if(history.state) return; // // record our first page of the session // history.pushState({href:href},null,href); });
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Snippet ID: | #1031909 |
Snippet name: | iflex_spa.js - turn website into single page app |
Eternal ID of this version: | #1031909/1 |
Text MD5: | 86b634ecae08ea3f51d33b22f7807428 |
Author: | stefan |
Category: | javascript |
Type: | Document |
Public (visible to everyone): | Yes |
Archived (hidden from active list): | No |
Created/modified: | 2021-07-25 05:57:19 |
Source code size: | 10789 bytes / 272 lines |
Pitched / IR pitched: | No / No |
Views / Downloads: | 150 / 66 |
Referenced in: | -